Jon Rauch, as perceptive as ever:
The courts, as Obama, the former law professor, must be well aware, will take notice. Two big gay-rights cases–one challenging California's revocation of gay marriage, the other challenging the Defense of Marriage Act–are on their way toward the Supreme Court. With his switch from ambivalence to advocacy, Obama is sending a signal to the courts that the country is ready for gay marriage, giving them more cover to uphold it. Courts may not go by poll results, but they do like to stay within the mainstream. And Obama has just moved it.